78575115040 has 48 divisors (see below), whose sum is σ = 188676908280. Its totient is φ = 30914795520.

The previous prime is 78575115023. The next prime is 78575115041. The reversal of 78575115040 is 4051157587.

It can be written as a sum of positive squares in 4 ways, for example, as 20361006864 + 58214108176 = 142692^2 + 241276^2 .

It is not an unprimeable number, because it can be changed into a prime (78575115041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4015605 + ... + 4035124.

Almost surely, 2^78575115040 is an apocalyptic number.

It is an amenable number.

78575115040 is an abundant number, since it is smaller than the sum of its proper divisors (110101793240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78575115040 is a wasteful number, since it uses less digits than its factorization.

78575115040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8050805 (or 8050797 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 43.

The spelling of 78575115040 in words is "seventy-eight billion, five hundred seventy-five million, one hundred fifteen thousand, forty".